13078771 has 2 divisors, whose sum is σ = 13078772. Its totient is φ = 13078770.

The previous prime is 13078721. The next prime is 13078781. The reversal of 13078771 is 17787031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13078771 - 2¹³ = 13070579 is a prime.

It is not a weakly prime, because it can be changed into another prime (13078721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6539385 + 6539386.

It is an arithmetic number, because the mean of its divisors is an integer number (6539386).

Almost surely, 2^13078771 is an apocalyptic number.

13078771 is a deficient number, since it is larger than the sum of its proper divisors (1).

13078771 is an equidigital number, since it uses as much as digits as its factorization.

13078771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 13078771 is about 3616.4583503754. The cubic root of 13078771 is about 235.6074281140.

The spelling of 13078771 in words is "thirteen million, seventy-eight thousand, seven hundred seventy-one".